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What is Logic?

What is Logic?

This is the homepage of my draft textbook, What is Logic?. The DRAFT status of this book is very important: Portions of it are substantially incomplete. If, however, you find any errors, please let me know.

There is a supplementary series of youtube videos covering content in this book.

Recent updates:

  • 2021-10-25: Uploaded draft 2021-10-25; this version adds some more exercises for Chapter 6, and also adds some more terms to the index.
  • 2021-10-11: Uploaded draft 2021-10-11; this version corrects a few typos and updates Definition 6.1.8 to follow modern rather than Aristotelian conventions.
  • 2021-10-06: Uploaded draft 2021-10-06; this version makes one small correction to the opening material of Chapter 11.
  • 2021-07-26: Uploaded draft 2021-07-26; this version reorders some of the material in Chapter 11, “Frame Properties”.